Schlumberger Technology Corporation

Josiah Dale Shearon

Juraj Irsa

Patrick Virene

An indexing mechanism includes a piston. An indexing sleeve encases a portion of the piston. The indexing mechanism is longitudinally fixed to the piston, and is rotatable relative to the piston. The indexing sleeve includes an indexing track. An indexing ring surrounds less than an entirety of the indexing sleeve. The indexing ring is rotatable relative to the piston. The indexing ring includes an indexing pin that extends into the indexing track.

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Houston, TX, United States of America

Josiah Dale Shearon